镍磷合金巨电流变抛光过程的分子动力学仿真  

Molecular Dynamics Simulation of Giant-Electrorheological Polishing Process for Nickel-Phosphorus Alloy

作　　者：王昆[1] 林嘉俊 WANG Kun;LIN Jiajun(School of Mechanical Engineering,Tongji University,Shanghai 201804)

机构地区：[1]同济大学机械与能源工程学院,上海201804

出　　处：《现代制造技术与装备》2023年第10期124-127,共4页Modern Manufacturing Technology and Equipment

摘　　要：文章利用分子动力学模拟了巨电流变抛光过程中不同进给深度、切削速度和二氧化硅磨粒运动状态对镍磷合金工件表面形貌、磨削力、温度和势能的影响。结果表明:随着磨粒剪切和挤压作用,工件中原子发生位移和堆积,导致形成切屑和沟壑,其深度随着磨削深度的增加而增大;磨削速度对表面质量的影响较小;在磨削过程中,切向力和轴向力发挥主要作用;随着进给距离的增加,工件的势能和温度逐渐上升。The effects of different feed depth,cutting speed and motion state of silica particles on the surface morphology,grinding force,temperature and potential energy of nickel-phosphorus alloy workpiece were simulated by molecular dynamics.The results show that the atoms in the workpiece are displaced and deposited with the abrasive shear and extrusion,which leads to the formation of chips and gullies,and their depth increases with the increase of grinding depth.Grinding speed has little effect on surface quality.In the grinding process,tangential force and axial force play the main role.As the feed distance increases,the potential energy and temperature of the workpiece also rise.

关 键 词：巨电流变抛光 分子动力学 纳米磨削 镍磷合金 

分 类 号：TG580.692[金属学及工艺—金属切削加工及机床]